First Drive after building, Major shake

It might not balance out with speed.
Spin the tire jacked up off the ground, put a brick or piece of 2x4 on the ground near the tire.
If it wobbles in or out, or up and down you found your problem.
I just had the tires balance on my Jeep, and vibration you can drive in and out of.
Left rear rim is bent. Why did they not tell me that when they balanced the tires?